Molding apparatus.



Patented July 17,1917.

m n zwnnv E ABEL & T. H. DAVIES. MOLDING APPARATUS.

APPLICATION mzb m. 16, 1911.

. n: k /////f/ PM E which may be sloping as shown,

ALBERT E. ABEL, OF W-ILKINSBUBG, AND THOMAS H. IDAVIES, 0F BLACK LICK, IENN- SYLVANIA, ASSIGNOBS TO THE IVIARSHALL FOUNDRY COMPANY, OF PITTSBURGH,

PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

MOLDING APPARATUS.

To all whom it may concern.

Be it known that we, ALBERT E. ABEL and THOMAS II. DAVIES, citizens of the United States, residing at Wilkinsburg, county of Allegheny, and Black Lick, in the county of Indiana, and State of Pennsylvania, respectively, have invented certain new and useful Improvements in Molding Apparatus, of which the following is a specification.

Our invention consists of an improvement in molding apparatus and has in view to provide a removable core barrel adapted to be secured in position and easily and quickly removed from the bottom plate or drag of the mold, and to be centralized with relation thereto, in its position within the checks or flask. In the form shown, the invention is especially adapted to the casting of ingot molds.

Referring to the drawings Figure 1 is a partial sectional view showing the base portion of the mold with the parts in operative position.

Fig. 2 is a cross section on the line II, II, of Fig. 1.

Fig. 3 is a partial sectional detail view, similar to Fig. 1, showing a modified construction.

In the drawings, 2 is a central core barrel of any suitable form, being generally rectangular in cross section, and in the illustration given, as adapted to the casting of an ingot mold.

The bottom plate 3 is provided with a centrally arranged clearance cavity for the core barrel 2 within a surrounding inwardly extending abutment or flange 4L having a lower bearing face 5. Against this face, bears the laterally extending base flange 6 of the core barrel 2 by its upper engaging face. The advantage in making the contacting faces sloping, as shown, is that the core barrel may be snugly seated and centralized in position, and will facilitate separation after the casting operation.

The under portion of the bottom plate 3 is provided with a depending base portion 7 having transverse tapered key-ways 8, 8, at opposite sides, through which tapered keys 9 are driven inwardly, and which engage the bottom edge of the core barrel, as shown. By this means it is held tightly up Specification of Letters Patent.

Patented July 17, 191?.

Serial No. 142,636.

against flange 1 of the bottom plate in proper centralized position.

The surrounding cheek or flask 1O rests by its base upon the bottom plate, being provided with centralizing or locating holes and pins 11, or other suitable means. In Fig. 3 weshow a detail modification of the mounting of the core barrel within the drag, in which the flange 1 is provided with a flat horizontal face 5 extending inwardly around the central clearance opening. The base flange 6 of core barrel 2* is preferably provided with an upwardly turned bearing edge, while the drag 3" is similarly provided with the base or lugs and keys 9.

In operation, the core barrel being secured in position by the keys, with the usual surrounding core box in place, sand 12 is packed between the core box and core barrel 2 and the core box removed. Sand 13 is rammed within the cheek or flask 10 in connection with the usual pattern, and the entire surfaces of sand 12 and 13 and the exposed face of the drag are coated or blackened. Cheek 10 is then located in position on the drag as shown, and the mold is placed in the oven for drying.

In casting, the molding or casting cavity I 'ment, when the keys are again driven inwardly, and the core barrel and bottom plate are again ready for molding.

The advantages'of the invention will be readily appreciated by those familiar with the art.

The retaining engagement between the bottom plate and the core barrel, by their flange abutments insures against dislocating or uncentering of the core barrel or its therethrough. It will be understood that the construction or arrangement of the inwardly extending parts may be variously changed or modified by, the skilled mechanic to adapt it to the making of various castings, or otherwise, wlthin the scope of the following claims.

What we claim is: 1. In combination, a bottom plate having a central opening and an upwardly beveled continuous flange, a core barrel having a continuous lateral flange adapted to engage said first named flange, said flanges being adapted to cooperate to center said core and to prevent upward movement, and removable locking keys mounted in the bottom plate and engaging v underneath the, base of said core barreL'.

2. In combination, a bottom plate having a central opening, an upper inwardly extending continuous flange having a tapered seating face, a core barrel having a lateral continuous flange having a co-acting face, a base flange depending from said plate having transverse tapered key ways therein, and removable locking keys mounted in said key ways and engaging the under side of the base of the core barrel to lock said barrel in position.

3. In combination, a

bottom plate having a central openin and an inwardly extendmg continuous ange having an inwardly diverging tapered seating face, a core barrel having a continuous lateral flange having its upper face tapered to eo-act with said flange on said bottom portions being adapted to center said core and prevent upward movement due to the buoyant action of the metal, and removable locking keys mounted in the bottom plate and engaging the under face of the base of the core barrel to hold it in position.

In testimony whereof we hereunto aflix our signatures.

ALBERT E. ABEL. THOMAS H. DAVIES.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

1 Washington, D. 0.

plate, said tapered v 

